CN203478019U

CN203478019U - Backlight module

Info

Publication number: CN203478019U
Application number: CN201320576171.XU
Authority: CN
Inventors: 江政昇; 曾威扬; 陈允军
Original assignee: Nanjing CEC Panda LCD Technology Co Ltd
Current assignee: Nanjing CEC Panda LCD Technology Co Ltd
Priority date: 2013-09-17
Filing date: 2013-09-17
Publication date: 2014-03-12
Anticipated expiration: 2023-09-17

Abstract

The utility model discloses a backlight module, and relates to the technical field of liquid crystal backlight, in particular to a backlight module of a liquid crystal displayer. The backlight module comprises a back plate and an LED lamp bar, wherein the LED lamp bar is fixed to the back plate. The LED lamp bar comprises a vertical side wall and a bottom portion base plate, the vertical side wall is connected with the bottom portion base plate, and at least one folding line is arranged at the connection position of the vertical side wall and the bottom portion base plate. The folding line is a spot breaking line or a notch. The folding line is arranged on the bottom portion base plate of the LED lamp bar, the bottom portion base plate of the lamp bar can be easily bent along the folding line to be attached to and fixed to the back plate, and therefore design space required by the width of a module frame is reduced, and the design of a narrow frame is achieved.

Description

Backlight module

Technical field

The utility model relates to LCD backlight technical field, particularly relates to the backlight module of liquid crystal display.

Background technology

Along with development and the client of LED technology has been tending towards obviously to liquid crystal display and the lightening demand of LCD TV, the pure lightening liquid crystal display of narrow frame of beautiful, the sharp sense of profile has become fashion trend.How reducing the needed design space of module border width, reach narrow frame lightening, is a difficult problem for current LCD backlight module design.

At present, the backlight module of side entering type LED light source (LED lamp is placed on the side of LGP) has become the main flow of this 2 years prior aries.Side entering type LED light source is spot light, and for spot light being become to line source and area source, side entrance back need to be used LGP.Fig. 1 is prior art side entering-type LED backlight module exploded view, and Fig. 1 is prior art side entering-type LED backlight module exploded view, and this side light source LED-backlit module comprises backboard 10, one LED lamp bar light sources 20, conventionally by heat conduction adhesive tape, is fixed on backboard; One LGP 40, is provided with incidence surface and exiting surface, and incidence surface side is provided with LED lamp bar light source; One reflector plate 30, is positioned at the below of described LGP 40; Some blooming pieces 50, are positioned at the top of described LGP 40; And one glue frame 70 by its assembling.

The LCD backlight module lamp bar used of existing volume production is vertical bar shaped, the schematic diagram of LED lamp bar as shown in Figure 2, and LED lamp bar 20 comprises: LED lamp bar substrate 201, this substrate is printed circuit board (PCB); And be evenly arranged in the some LEDs 202 on this substrate 201.In the design of backlight module of small-medium size, LED lamp bar substrate material adopts flexible printed wiring board (FPC) material conventionally, because of circuit trace demand, therefore flexible printed wiring board needs certain width W 1 space in order to circuit trace, be illustrated in fig. 3 shown below, but cause the width W 2 design restrictions of the frame 500 of module; Though 201 designs of lamp bar substrate are placed in to the lower of reflector plate 30, can improve above-mentioned problem, therefore the local thickness of backlight module can increase; Therefore the countermeasure that proposes this above problem of solution is the quite urgent and necessary subject under discussion of design of backlight module of current small-medium size.

Utility model content

In order to overcome in prior art the width because of the substrate of LED lamp bar, cannot reduce the needed design space of module border width, cannot realize narrow frame design.

The utility model provides a kind of backlight module, comprise: a backboard and a LED lamp bar, LED lamp bar is fixed on backboard, described LED lamp bar comprises, the basic plate in upright side walls and bottom, described upright side walls is connected with the basic plate in described bottom, and is provided with at least one section of pre-broken line in described junction.

Further, described pre-broken line is some broken string;

Further, described pre-broken line is otch;

Further, on the basic plate in described bottom, be provided with several LED;

Further, at the two ends of described LED lamp bar, be provided with back coupling circuit cabling.

Beneficial effect: by being provided with pre-broken line on the substrate at LED lamp bar, lamp bar substrate is by this pre-broken line, and bending easily attaches is fixed on backboard, and then reduces the needed design space of module border width, thereby reaches the design of narrow frame.

Accompanying drawing explanation

Fig. 1 is the side entering-type LED backlight module exploded view of prior art;

Fig. 2 is the schematic diagram of the LED lamp bar of prior art;

Fig. 3 is the side entering-type LED backlight module profile of prior art;

Fig. 4 is the part sectioned view of backlight module of the present utility model;

Fig. 5 is the schematic diagram of LED lamp bar of the present utility model;

Fig. 6 is the schematic diagram that the pre-broken line of LED lamp bar of the present utility model is otch;

Fig. 7 is that in Fig. 5, upright side walls bends the schematic diagram after 90 degree along pre-broken line.

The specific embodiment

Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment and only for the utility model is described, be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.

A kind of side entering-type LED backlight module embodiment of the present utility model being provided below in conjunction with accompanying drawing is described in detail.As shown in Figures 4 to 7, side entering-type LED backlight module of the present utility model, comprising: backboard 100, LED lamp bar 200, LGP 400, be provided with incidence surface and exiting surface; LED lamp bar 200 is arranged on backboard 100, and is arranged on the incidence surface side of LGP 400; Be positioned at the reflector plate 300 of the below of described LGP, be positioned at some blooming pieces of the top of described LGP 400; And one glue frame assembled.

LED lamp bar 200 comprises: upright side walls 220, the basic plate 210 in bottom and be evenly arranged in the some LEDs 230 on the basic plate 210 in bottom.Wherein, upright side walls 220 is connected with the basic plate 210 in bottom, and junction is provided with at least one section of pre-broken line 240; This pre-broken line is some broken string; Or be a kerf, as shown in Figure 6.The material of the basic plate of upright side walls and bottom adopts flexible printed wiring board (FPC) material conventionally; At the two ends, left and right near LED lamp bar 200, be provided with back coupling circuit cabling, place, the two ends, left and right of LED lamp bar 200 leaves the cabling space of back coupling circuit, in order to circuit trace.

During assembling, first sticking two-faced adhesive tape in upright side walls 210, afterwards,, is attached at upright side walls on backboard upright side walls 220 bending 90 degree along pre-broken line 240.The width W 1 of the substrate of the LED lamp bar of contrast prior art, the width L1 of the substrate of the LED lamp bar of prior art is significantly less than W1, improve the space availability ratio of backlight module, and then the needed design space of module border width L2 of reducing module, design of backlight module compared to general small-medium size, can make module border width L2 decline to a great extent, thereby reach the design of narrow frame.

Claims

1. a backlight module, comprise: a backboard and a LED lamp bar, LED lamp bar is fixed on backboard, it is characterized in that: described LED lamp bar comprises, the basic plate in upright side walls and bottom, described upright side walls is connected with the basic plate in described bottom, and is provided with at least one section of pre-broken line in described junction.

2. backlight module according to claim 1, is characterized in that: described pre-broken line is some broken string.

3. backlight module according to claim 1, is characterized in that: described pre-broken line is otch.

4. backlight module according to claim 1, is characterized in that: on the basic plate in described bottom, be provided with several LED.

5. backlight module according to claim 1, is characterized in that: at the two ends of described LED lamp bar, be provided with back coupling circuit cabling.